电子器件2025，Vol.48Issue(6)：1220-1226,7.DOI:10.3969/j.issn.1005-9490.2025.06.004
12.5 Gb/s自适应均衡器新型自适应算法研究及电路设计
The New Adaptive Algorithm and Circuit Design for the 12.5 Gb/s Adaptive Equalization Receiver
摘要
Abstract
In the high speed communication interface,the equalizer must use the adaptive algorithm to track and process the channel changes in real time to realize the dynamic compensation of different channel losses.A new sign-sign least mean square(SS-LMS)error adaptive algorithm is proposed.Based on the traditional SS-LMS algorithm,a digital state machine is used to detect the code pattern of the received data,and an expected value algorithm is introduced.The product of the internal reference voltage and the balanced data is used to replace the external expected data,and the gain can be adjusted adaptively by comparing the reference voltage with the received signal.This algorithm fundamentally solves the defect of traditional SS-LMS adaptive algorithm that relies on external input training da-ta,not only improves the adaptive ability of equalizer,but also saves the chip design cost by reducing the number of interfaces.An adap-tive receiver circuit based on the improved algorithm is designed by using SMIC 28 nm CMOS technology.It achieves data equalization with 25 dB channel attenuation at a transmission rate of up to 12.5 Gb/s,and the horizontal opening of the eye image after equalization can reach 0.88 UI.关键词
判决反馈均衡器/符号最小均方算法/自适应算法/连续时间线性均衡器/接收器Key words
decision feedback equalizer/sign-sign least mean square/adaptive algorithm/continuous time linear equalizer/receiver分类
信息技术与安全科学引用本文复制引用
MIAO Yufang,SUN Haoyi,LIU Ke,LIU Xinghui..12.5 Gb/s自适应均衡器新型自适应算法研究及电路设计[J].电子器件,2025,48(6):1220-1226,7.基金项目
辽宁省自然科学基金资助项目(2021-MS-148) （2021-MS-148）
